Polycom Vortex EF2280 User manual

Enjoy clear, understandable conversation in all
conferencing applications.
The Vortex EF2280 improves audio quality for conferencing, distance learning, and other installed applications
through industry-leading acoustic echo and noise cancellation - with support for up to 8 microphones.
The Vortex EF2280 automatically mixes microphones and other audio sources while cancelling acoustic
echoes and annoying background noise. It is typically installed at each site in a multi-site network and is
commonly used in applications such as boardrooms, courtrooms, distance learning, sound reinforcement,
and room combining. It connects easily to other equipment such as codecs, VCRs, or other A/V products.
The unit can be programmed from the front panel, or through Conference Composer™ software (included).
Conference Composer's
Instant Designer™ wizard ensures fast, accurate setup for a variety of applications.
A single Vortex EF2280 unit provides automatic mixing of up to eight microphones plus four auxiliary
audio sources. If more microphones are needed, additional Vortex EF2280 or Vortex EF2241 units can be
linked, up to a total of eight units. Number of Open Microphones (NOM) information can be specified across
all channels in the linked units. The microphone channels feature industry-leading acoustic echo cancellation
to prevent retransmission of signals to their original locations. A neural network Automatic Gain Control
(AGC) reacts only to valid speech patterns, bringing voices within desired levels. AGC controls are user
adjustable, as are settings for the five-band parametric EQ offered on all input and output channels and
output delay controls.
The high-quality audio choice to access the power of Polycom unified collaborative communications solutions.
With the greatest breadth and depth of integrated video, voice, and Web solutions, only Polycom delivers
the ultimate communications experience. Our market-leading conferencing and collaboration technologies,
supported by world-class service, enable people and organizations to maximize their effectiveness and pro-
ductivity. Add to that the most experience and proven best-practices in the industry, and it’s clear why
Polycom has become the smart choice for organizations seeking a strategic advantage in a real-time world.
Polycom®Vortex®EF2280
Acoustic echo/noise canceller with automatic
microphone/matrix mixer
Benefits
Industry leading audio quality – Design
enhancements improve the audio experi-
ence for even the most demanding listening
environments; support for the broadest
range of microphones in the industry
Hear every word with Polycom’s
industry-leading acoustic echo and
noise cancellation – Ensures the highest
possible audio quality between sites with
20 kHz bandwidth, 270 ms tail length, more
than 10 dB of room gain, and a conver-
gence rate of over 40 dB per second on
each mic/line channel
Integrated voice and video
solution – May be linked with additional
Vortex Installed Voice products including
Vortex EF2201, Vortex EF2210, Vortex
EF2211, the Vortex EF2241 and Vortex
EF2280; Polycom’s SoundStation VTX
1000™ wideband conference phone and
Polycom’s video conferencing systems
including the VSX™ 7000 and 8000
product lines
Easy setup – Conference Composer™ and
Polycom
Instant Designer™ software make
configuration fast and simple
Easy to operate – Controllable via
Crestron®, AMX®or other room control
systems, RS-232, the Vortex EF-IR11
infrared controller, or from the unit’s front
panel; 16 factory presets and 32 user con-
figurable presets allow quick selection of
operating parameters
Adaptable to user requirements – User-
programmable delays on all outputs, 5-band
parametric EQ on all inputs and outputs,
intelligent Automatic Gain Control, 256
macros, system diagnostics, and other
tools ensure the best performance for
all room conditions
Connect. Any Way You Want.

Polycom Vortex EF2280 Specifications
Part No. 3726-82280-001 Rev. 10/04
www.polycom.com
Polycom Headquarters: 4750 Willow Road, Pleasanton, CA 94588 (T) 1.800.POLYCOM (765.9266) for North America only.
For North America, Latin America and Caribbean (T) +1.925.924.6000, (F) +1.925.924.6100
Polycom EMEA: 270 Bath Road, Slough, Berkshire SL1 4DX, (T) [phone], (F) [phone]
Polycom Asia Pacific: Polycom Hong Kong Ltd., Rm 1101 MassMutual Tower, 38 Gloucester Road, Wanchai, Hong Kong, (T) +852.2861.3113, (F)+852.2866.8028
Dimensions
• 19” (483 mm) W x 9.6” (244 mm) L x 1.75” (45 mm) H (one
rack unit)
Weight
• 4 lbs. (1.8 kg) dry, 5.5 lbs. (2.5 kg) shipping
Connectors
• RS-232: DB9F
• EF Bus In/Out: RJ45
• Control /Status: DB25F
• Audio: Mini (3.5mm) quick connect terminal blocks
Power
• External supply (provided)
• Input voltage of 110-240 VAC; 47-63 Hz; power consump-
tion 30 W
Inputs
• Phantom power: 48 V DC, software selectable
• Analog input Gain: 0 to 30 dB Mic/line inputs in 1 dB
steps, software adjustable
• Mic/Line switch gain: 33 dB
• Maximum input amplitude: +19 dBu, 1% THD + N
• Nominal level: 0 dBu (0.775V rms)
• Equivalent input noise: <-124 dBu, 20 - 20,000 Hz
• Input Impedance: 10 kOhms
• Input EMI Filter: Pi filter on all audio inputs
Outputs
• Output Gain: -100 to 20 dBu in 1 dB steps, software
adjustable
• Maximum output amplitude: +23 dBu, 1% THD + N
• Nominal output level: 0 dBu (0.775 V rms)
• Output impedance: 33 Ohm, each leg to ground
• Output EMI Filter: Pi filter on all audio outputs
System*
• Frequency response: 20-20,000 Hz, + 0.2 /- 0.3 dB
• Idle channel noise: <-100 dB FS "A" weighted, 20 - 20,000
Hz, 0 dB gain
• Dynamic range: >100 dB FS "A" weighted, 20 - 20,000 Hz,
0 dB gain
• Linearity: 0 dB FS to -110 dB FS +/- 1 dB
• THD+N: < -90 dB FS
• Common Mode Rejection Ratio: <-61 dB, 20 - 20,000 Hz,
no weighting
• Cross talk: <-104 dB, 20-20,000 Hz, channel-to-channel
• Latency: Mic/Line inputs to outputs: 13 ms, processing
enabled
• Acoustic Echo Cancellation Span: 270 ms
• Total Cancellation: >65 dB
• Convergence Rate: 40 dB/second
• Noise cancellation: 0-15 dB, software selectable
• Operating Temperature: 0° - 40° C
• Control Inputs: Contact closure
• Status Outputs: 5 V, 20 mA each
*Unless noted, all values are valid for all channels at line level
©2004 Polycom, Inc. All rights reserved.
Polycom, the Polycom logo and Vortex are registered trademarks and SoundStation VTX 1000, Conference Composer, InstantDesigner and VSX are trademarks of Polycom, Inc. in
the U.S. and various countries. All other trademarks are the property of their respective companies. Specifications subject to change without notice. For Architect's and Engineer's
Specifications, please visit Polycom.com, or contact the Installed Voice Business Group at 1.770.350.4140.
System Block Diagram and Rear Panel